#include <iostream>
#include <algorithm>
using namespace std;
int a[100005];
int main(){
    freopen("duel.in","r",stdin);
    freopen("duel.out","w",stdout);
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    sort(a+1,a+n+1);
    for(int i=1,j=1;i<=n;i++){
        if(a[i]>a[j]){
            a[j]=-1;
            j++;
        }
    }
    int cnt=0;
    for(int i=1;i<=n;i++){
        if(a[i]!=-1){
            cnt++;
        }
    }
    cout<<cnt<<endl;
    return 0;
}
